Method and apparatus for efficient addressing of DRAM in a video

Details Method and apparatus for efficient addressing of DRAM in a video Method and apparatus for efficient addressing of DRAM in a video

1996-07-25

1997-10-07

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348416, 348415, 348411, 348409, 348720, 348721, 348715, 348710, H04N 718

Patent

active

056753870

ABSTRACT:
Pixel data is stored and subsequently read from a random access memory of a video decompression processor in a manner that reduces the number of times different rows of the RAM must be addressed in order to retrieve portions of the pixel data therefrom. Pixel data from a video frame is stored in the RAM as a plurality of pages. Each page substantially fills a different row of the RAM and corresponds to a different section of the video frame. A motion vector is decoded to determine the location of a prediction area within the video frame. In the event that the prediction area encompasses more than one of the pages of the video frame, the pixel data is retrieved one page at a time, minimizing the number of row changes required when addressing the RAM to retrieve the data.

REFERENCES:
patent: 5170259 (1992-12-01), Niihara
patent: 5226093 (1993-07-01), Iwase
patent: 5267334 (1993-11-01), Normille et al.
patent: 5293593 (1994-03-01), Hodge et al.
patent: 5315388 (1994-05-01), Shen et al.
patent: 5379070 (1995-01-01), Retter et al.
patent: 5379356 (1995-01-01), Purcell et al.
patent: 5384581 (1995-01-01), Ikeda
patent: 5386233 (1995-01-01), Keith
patent: 5398072 (1995-03-01), Auld
patent: 5406311 (1995-04-01), Michelson
Preliminary Data Sheet entitled "MPEG-2/DCII Video Decompression Processor," .COPYRGT.Motorola Microprocessor and Memory Technologies Group, 1994, Document MC68VDP/D.

Affiliated with

Also associated with

Rating

Method and apparatus for efficient addressing of DRAM in a video does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for efficient addressing of DRAM in a video, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for efficient addressing of DRAM in a video will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2361237